Welcome to justanwer.
If you have fuel leaking from the top of the gas tank then you have a fuel line that is either loose or cracked.
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So your saying with engine off no matter how many times I prime he fuel pump it should not leak? It seems odd that fuel is coming from the vents in the bottom cover as the top of the tank actually overhangs this and you would think it would drip over the edge not from between the tank and cover.
Yes you should never leak fuel no matter how long the pump is running. The fuel is probably just running down the side of the tank and behind the cover.